Muffler



H. PAULSON.

MUFFLER- APPLICATION FILED JUNE 30, I9I9. 1,351,122, PatentedAug. 31,1920.

N f i E g i f r l l i 7 s2, 1 M Gnome/ HANS IAULSON, OI ORTIN, WASHINGTON.

MUFFLER.

Specification of Letters Patent. Patented Aug, 31, 1920.

Application filed June 30, 1919. Serial No. 307,562.

To all whom it may concern:

Be it known that I, HANS PAULSON, a citizen of the United States, and a resident of Ortin, in the county of Pierce and State of l/Vashington, have invented new and useful Improvements in Mufflers, of which the following is a specification.

This invention relates to mufflers and has particular reference to that class of mufilers adapted to be used in connection with internal combustion engines although not restricted to such use.

An important object of the invention is to provide in a device of the above mentioned character a means whereby the excessive sounds or detonations incident to the release of the exhaust gases under pressure from the internal combustion engine may be decreased or destroyed without setting up what is known as back-pressure within the exhaust pipe carrying the main line of exhaust gases from the engine.

A further object of the invention is to provide a muffler of the above mentioned character which is simple in construction and efficient in use.

Other objects and advantages of the invention will be apparent during the course of the following description taken in connection with the accompanying drawings.

In the drawings, forming a part of this specification and wherein like numerals are employed to designate like parts throughout the same,

Figure 1 is a side elevation of the muffler embodying my invention,

Fig. 2 is a transverse sectional view taken substantially on line 22 of Fig. 1, and,

Fig. 3 is a transverse sectional view taken substantially on line 3-3 of Fig. 1.

In the drawings, wherein for the purpose of illustration is shown a preferred form of my invention, the numeral 5 indicates an exhaust pipe adapted to be suitably connected to an internal combustion engine not shown. To the end of the pipe 5 there is connected a late 6 to which is secured a second plate To the second plate 7 there is suitably connected a plurality of, preferably four, diver ing pipes 8 which, as clearly shown in ig. 2, communicate with the exhaust pipe 5 in such a manner that the exhaust gases passing through the exhaust pipe 5 are divided into substantially equal portions, the equal portions being directed into the several pipes 8 as is apparent. To the ends of the pipes 8 there is suitably connected a plate 9 to which is seecured a second plate 10. To the second plate there is secured a plurality, preferably sixteen, elongated tubes 11. The tubes 11 are arranged in groups of four as clearly shown in Fig. 3. It will be noted that the pipes of the four groups are adapted to receive equal portions of exhaust gases from the communicating pipes 8 as is clearly shown in Fig. 3. As a means for supporting the ends of the several pipes 11 and retaining them in a spaced relation with respect to each other there is provided a plate 12 through which each of the pipes 11 is projected, the pipes 11 being secured to the plate 12 by any suitable means.

In use, the exhaust gases passing through the exhaust pipe 5 are divided and equal portions are directed into the four pipes 8. The exhaust gases from each of the pipes S is again divided and directed into four of the pipes 11 the pipes 11 being arranged in groups. It is therefore apparent, by the arrangement of the pipes herein described, that the exhaust gases passing through the pipe 5 are first divided into four streams or columns, which columns are again divided into sixteen streams or columns, thereby gradually allowing the exhaust gases to expand, approaching atmospheric pressure when they are finally liberated at the ends of the tubes 11.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

Having thus described my invention, what I claim as new and desire to secure and protect by Letters Patent of the United States, is:

1. A mufiler for internal combustion engines comprising a plate provided with an opening adapted to receive an end of the exhaust pipe of the engine, a secondplate secured to the first named plate, the second named plate being provided with a plirality of openin s partially registering with the opening oi the first named plate, and a plurality of diverging pipes secured to the second named plate, the plurality of pipes having their ends secured within the openings 7 of the second named plate so as to receive equally divided portions of exhaust from the exhaust pipe.

2. A mutller for internal combustion en gines comprising a plate provided with an opening adapted to receive an end of the exhaust pipe of the engine, a second plate secured to the first named plate, the second named plate being provided with a plurality of openings partially registering with the opening of the first named plate, a plurality oi divergin pipes secured to the sec- 0nd named plate, the plurality of pipes having their ends so secured within the openings of the second named plate so as to receive equally divided portions of exhaust from the exhaust pipe, a third plate secured to the diverting ends of said pipes, a fourth plate secured to the third named plate, a plurality of tubes secured to the fourth named plate, said tubes being arranged in groups about the centers of the diverted ends of said pipes and partially registering therewith to receive divided portions of exhaust from said pipes.

3. A muflier for internal combustion engines comprising a plate provided with an opening adapted to receive an end of the exhaust pipe of the engine, a second plate secured to the first named plate, the second named plate being provided with a plurality of openings partially registering with the opening of the first named plate, a plurality of diverging pipes secured to the second named plate, the plurality of pipes having their ends so secured within the openings of the second named plate so as to receive equally divided portions of exhaust from the exhaust. pipe, a third plate secured to the diverting ends of said pipes, a fourth plate secured to the third named plate, a plurality of tubes secured to the fourth named plate, said tubes being arranged in groups about the centers of the diverted ends of said pipes and partially registering therewith to receive divided portions of exhaust from said pipes, and means for retaining the exhaust ends of said tubes in a spaced relation to each other.

HANS lAULSON. 

